I am trying to create a stacked bar chart, and color the bars using color names I have stored in a variable party_color.

This is my attempt:

import pandas as pd
import matplotlib.pyplot as plt

marginal_electorates_2016 = {'margin': {0: 'Fairly safe', 1: 'Fairly safe', 2: 'Fairly safe', 3: 'Marginal', 4: 'Marginal', 5: 'Marginal', 6: 'Marginal', 7: 'Safe', 8: 'Safe', 9: 'Safe', 10: 'Safe'},
                             'PartyNm': {0: 'Australian Labor Party', 1: "Katter's Australian Party", 2: 'Liberal/National Coalition', 3: 'Australian Labor Party', 4: 'Independent', 5: 'Liberal/National Coalition', 6: 'Nick Xenophon Team', 7: 'Australian Labor Party', 8: 'Independent', 9: 'Liberal/National Coalition', 10: 'The Greens'},
                             'count': {0: 32, 1: 1, 2: 29, 3: 24, 4: 1, 5: 28, 6: 1, 7: 13, 8: 1, 9: 19, 10: 1},
                             'party_color': {0: 'red', 1: 'yellow', 2: 'blue', 3: 'red', 4: 'pink', 5: 'blue', 6: 'orange', 7: 'red', 8: 'pink', 9: 'blue', 10: 'green'}}

marginal_electorates_2016 = pd.DataFrame(marginal_electorates_2016)

         margin                     PartyNm  count party_color
0   Fairly safe      Australian Labor Party     32         red
1   Fairly safe   Katters Australian Party       1      yellow
2   Fairly safe  Liberal/National Coalition     29        blue
3      Marginal      Australian Labor Party     24         red
4      Marginal                 Independent      1        pink
5      Marginal  Liberal/National Coalition     28        blue
6      Marginal          Nick Xenophon Team      1      orange
7          Safe      Australian Labor Party     13         red
8          Safe                 Independent      1        pink
9          Safe  Liberal/National Coalition     19        blue
10         Safe                  The Greens      1       green

plt.figure(figsize=(16, 6))

marginal_electorates_2016.plot(
    kind = 'bar',
    x = ['margin', 'PartyNm'],
    y = 'count',
    stacked = False,
    subplots = True,
    figsize = [10,15],
    sharey = True,
    c = 'party_colour'
    )
plt.tight_layout

CodePudding user response：

• The easiest way to plot groups of bars is to reshape the dataframe from a long to wide format with
  • with stacked=True